Efficaciousness and Effectualness

Efficaciousness

Efficaciousness noun - The power to produce a desired result.
Usage example: the debatable efficaciousness of many of the campaigns aimed at reducing smoking among teenagers

Effectualness and efficaciousness are semantically related in affect topic. In some cases you can use "Effectualness" instead a noun "Efficaciousness", when it comes to topics like effect.

Effectualness

Effectualness noun - The power to produce a desired result.
Usage example: the effectualness of that new cancer treatment has yet to be proven

Efficaciousness and effectualness are semantically related in affect topic. You can use "Efficaciousness" instead a noun "Effectualness", if it concerns topics such as effect.
Cite this Source
Effectualness and Efficaciousness. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/efficaciousness/effectualness
Efficaciousness & Effectualness. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/efficaciousness/effectualness>.
Effectualness or Efficaciousness. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/efficaciousness/effectualness.
Google Ngram Viewer shows how "efficaciousness" and "effectualness" have occurred on timeline